As adjectives the difference between underhand and despicable
is that underhand is secret; clandestine while despicable is fit or deserving to be despised; contemptible; mean; vile; worthless.
As an adverb underhand
is with an underhand movement.
underhand
English
Adjective
(
en adjective)
secret; clandestine
(by extension) dishonest and sneaky; done in a secret or sly manner
thrown (etc.) with the hand brought forward and up from below
Adverb
(
en adverb)
with an underhand movement
in a sly, sneaky or secret manner
despicable
English
Adjective
(
en adjective)
Fit or deserving to be despised; contemptible; mean; vile; worthless
Synonyms
* (l)
* mean
* vile
Antonyms
* honorable